package javc;

public class jiajia {
    public static void main(String[] args) {

    }
    public static void main(String[] args) {
        int a = 11;
        a++;

        System.out.println(a);
        ++a;
        System.out.println(a);
        --a;
        System.out.println(a);
        a--;
        System.out.println(a);

    }
}
